A mounting element for a dental prosthesis, the prosthesis including at least one bridge, the mounting element and prosthesis being formed using 3D printing, where the mounting element has an axis of elongation and comprises an engagement portion, for fixedly engaging the prosthesis and an attachment portion, for enabling secure attachment of the prosthesis to the jig during machining, the mounting element further comprises a registration portion for aligning, in use, the prosthesis in a precise position and/or orientation on a jig during machining, the registration portion comprises a tapering portion having a conically tapering outer surface.